Nonexpansible hose



M. R. SHERBINO NONEXPANSIBLE HOSE sept. 1s, 1928.l 1,684,717

Filed Deo. 13, 1923 3 Sheets-Sheet 1 Sept. 18, 19428. M. R. sHERBlNoNONEXBANSIBLE HOSE s Sheets-sheet 2 Filed Deo. 15, 1923 m m l Vw W 7 W@W g d 4 7% fw m 4 Fb a 7 W i J Z I I* wrww wx r w I,@wmwwwMNHN Sept.18, 1928.

M. R. SHERBINO NQNEXPANSIBLE HOSE 3 Sheets-Sheet 3 Filed Dec. 13, 1 923fig Patented Sept. 18, 1928. Y

U1\uT.=.ov STATES PATENT OFFICE.

BRAKE COMPANY, OF LOS'ANG-ELES, FORNIIA. y

CALIFORNIA, A COQRIEORACLION'v OF CALI- NONEXPANSIBLE HOSE.

Application iiled December 13, 1923. Serial No. 680,294.

This invention relates to non-expansible hose such asare used to conveythe fluid to the brake operating cylinders in hydraulic brake systemsfor automobiles and other 5 vehicles. In patent to Loughead No.1,461,130, a` hose of the character referred to is shown, and also onemethod of insertlng the coil of wire within the hose core.

The preselit invention has for its object l theprovision of an improvedmeans for 1nserting the coil of wire within the bore of the hose;

In constructing the non-expanslble hose above referred to, the hose isexpanded by l forcing a fluid under pressure intothe hose,

.and while it is in its expanded condition, a

Ycoil of wire is snugly inserted within the hose bore. Thus when theinternal pressure'is removed from the bore of the hose, the hose is heldin its expanded position and will not readily expand thereafter whensub'ected to internal pressures, particularly if t e internal pressuresare less than that 4to which the hose was subjected when the coil ofwire was inserted in the bore. v

` The present invention is designed to utilize the pressure of thefluidwithin theliose bore not only to expand the hose, but also to forcethe coil of wire into the bore of the hose.

It is -believed that the invention will be best understood by a detaileddescription thereof taken in connection with the accompanying ldrawings, in which v Fig. 1 is a side view of the device for insertingthe coil within the hose,the fluid retaining tank only being shown insection;

Fig. 2 is an enlarged viewof the central portion of the arrangementshown in Fig. 1, certain additional parts being shown in sec tion betterto disclose the construction of the apparatus; U

Fig. 3 is a transverse sectlon substantially on the line 3 3 of Fig. '2;y

Fig. 4 is a section through the lower hose y connection shown in Fig. 1;

Fig. 5 is a view of thel guiding and supporting rails shown at the leftin F1g..4 and in the upper portion ofFig, 1;'

Fig. 6 is a view of the en of the hose, partly in section, showing thefitting at the end thereof before the inner sleeve 1s`v expanded,

Fig. 7 is a similar view showing the inner sleeve of the hose fitting inexpanded condition, and

' Figure 8 is an enlarged view of a part of the apparatus illustrated inFigure 4.

As the hose structure disclosed in the present application is fullydescribed in the atent above referred to, it will be described onlybriefly-herein. It consists of the hose 10., which may be of anypreferred construction, which is adapted to withstand high internalpressures. The fitting at the end of the hose consists of the outersleeve 11 positioned about the end of the hose and provided with thethreaded nipple 12. The inner surface of the sleeve 11 is serrated, asindicated at 15, 1n Figs. 6 and 7. Positioned within the nipple 12 isthe sleeve or collar 13 provided with a reduced portion 14 extendinginto the bore of the hose. placed in position, the reduced portio 14 isexpanded as shown in Fig. 7, so that e inner diameter' of the tube orsleeve is slightly greater .than the normal diameter of the hose bore.In expanding the sleeve 14, ortions of the outer surface of the hose areorced into the serrations 15, thus firmly securing the fitting to thehose end. As ordinarily employed, the hose is provided at each end witha fitting such as the one just described.

The means for inserting the'coil of wire, indicated' at 16.in Fig. .7,within the bore of the hose will now be described.l Mounted within thetank 17., 'by means of the brackets 18 carried by the upright 19, isafvertically positioned tube or cylinder 21 closed at the bottom bymeans of the cap 2,2. Positioned within the tube 21 is a rod 24 aboutwhich may be positioned the spring 16. The lower After the collar 13 hasbeen end of the rod 24 is provided with an enlarged head 25 to preventthe rod from 4passing through the coil.

In screw threaded connection with the upper end of the Ktube 21 is asleeve 26 (Fig. 2), the upper end of which is internally screw threaded,as indicated at 27, so as to receive the 'threaded nipple 12 at one endofthe hose 10. Positioned about the sleeve 26 is the hub 28 of the handwheel 29. The hub 28 is provided with a lining 30 which is adapted toengage the outer surface of the sleeve 26, and `more particularly theshouldered portion 31 of the hose fitting (see Fig. 8). The portion 31is iiatt'ened on one 0r more sides and the opening through the lining 30is similarly attened so that the Ashouldered portion 31 is non-rotatablein the lining 30.

` tween the shoulder 35 on lthe sleeve 26 and the hub28is a compressionspring 36 which normally acts to urge the hub 28 and hand wheel 29toward their uppermost positions.

In joining the hose fitting to the sleeve 26, the hose is inserted inosition and rotated until the threaded portlon 12 of the fitting hastraveled within the upper end of the sleeve sufficiently to bring theshouldered portion 31 within the lining 30. The hose is now rotatedthrough the medium of the lining 30 by means of the hand Wheel 29. Thespring 36 acts, during this operation, to maintain the hand wheel hubfirmly in engagement with the hose fitting.

The rod 24 does not terminate at the upper end of'the tube 21, butextends upwardly beyond the end of the tube a distance slightly greaterthan the length of the hose within which the coil is to be inserted.Thus in joining the hose fitting to the sleeve 26, the hose is firstpassed over the upwardly projecting end 37 of the rod 24.

Slidably mounted within the slot 20 formed in the web of the upright 19,adjacent to the u per end thereof, is a bracket member 38 whic carriesthe threaded sleeve 39 (see Fig. 4), adapted to be joined to the nipple12 of the fitting at the upper end of the hose 10. As previously stated,the bracket 38 is` slidably mounted, and while the hose is beinginserted over the rod 37 and joined to the sleeve 26, the bracket 38 andparts carried thereby are maintained in their uppermost positions bymeans of the spring 40 (see Fig. 5) carried by the upright member 19.When, however,

the hose has been attached to the sleeve 26, as

previously described, the bracket 38 is lowered, and the sleeve 39 isbrought into engagement lwith the fitting at the upper end of the hose10. In this rocess, the upper end 37 of the rod passes t rough thestufling box 41 at the upper end of the sleeve 39.

Secured to the sleeve 39 is a hand wheel 42 by means of which the sleevemay be rotated to cause the threaded lower end thereof to firmly engagethe threaded portion 12 of the hose fitting. During this process,rotation of the hose is prevented by reason of the flattened shoulder ofthe fitting being snugly engaged by the bracket member 38.

Carried by the bracket member 44 (Figs. 1 and 2) is a cylinder 45 whichcommunicates through the tube 46 with a source of air under pressure, avalve 47 being provided to admit the air to the'cylinder v45. The valve47 is arranged to be operated by means of the lever 48 pivotally joinedto one end of the link 49, the opposite end of the link 49 beingpivotally connected to the lever 50, as shown in Fig. 1. The lever 5()is pivotally supported at 51 and is provided with a pedal 52 which isnormally held in its elevated po-l sition by means of the tension spring53. Thus, when it is desired to admit air into the cylinder 45, theoperator may depress the pedal 52, causing the valve 47 to operate andair to be admitted to the cylinder 45.

Within the cylinder 45 is a piston 54 which is joined by the rod 55 to apiston 56 slidably positioned within the cylinder 57, also carried bythe bracket member 44. Positioned about` the rod 55 between the upperend of the cylinder 57 and the piston 54 is a compression spring 58which acts normally to maintain the pistons in their uppermostpositions. The lower end of the cylinder 57 communi cates with the boreof the sleeve 26 through the medium of the tube 60 (Fig. 3)

Communicating with the lower end of the cylinder is a tube 62 which isjoined to the strainer 63 through the check valve 64. The check valve 64is arranged to admit fluid to the cylinder 57, but to prevent the escapeof fluid from the cylinder.

IVewill assume that the tank 17 has a sufficient supply of fluid,preferably a combination of oil and alcohol, for the operation of thedevice, and that the cylinder 57 and tubes 21 and 60 are also filledwith fiuid. The rod 24 is then inserted in the tube 21, and the spring16 dropped over the rod. The hose 10 is next inserted over the upper end37 of the rod and attached to the sleeve 26 in a manner previouslydescribed.- The bracket,

38 is then lowered and sleeve 39 is attachedto the upper end of thehose. The pedal 52 is downwardly. Piston 56 operates. to expel the fluidwithin the cylinder 57 through the tube 60 into the tube 21, and thebore of the hose 10. Due to the fact that the area of the piston 56 isonly a fraction of the area of the piston 54, the fluid within thecylinder 57 may be placed under very high pressure. In practice, apressure of substantially 1000 pounds is usually sufficient tosatisfactorily expand 'the hose.

The end 2 5 of the rod 24 is acted upon by the fluid under pressure in amanner to tend to force the rod upwardly. Due to the fact that the upperend 37 of the rod passes through the stuiiing' box 41, it is not actedupon by the fiuid so as to tend to force the rod downwardly. The rod 24may have a diameter of perhaps l/i. Thus the area of.

issufficient to move the rod together with the coil 16 upwardly so'as toposition the coily Within the bore of the hose. When the coil -withinthe sleeves 13 atthe opposite ends of the hose (see Fig. 7).

normal position, it causes the cylinder to communicate with theatmosphere, and in its actuated position joins the cylinder to a sourceof compressed air. Thus, when the pedal 52 is depressed, the rod 2-1 andcoil 16 immediately move upwardly to position the coil within the hosebore. Upon permitting the pedal 52 to move upwardly, pressure is removedfrom the cylinder 45, and the ,pistons 54`and 56 aremoved to theiruppermost positions by means of the spring 53,- thus removing pressurefrom the fluid within the cylinder. As the piston 56 moves upwardly, anew supply of fluid is drawn mto the cylinder through the strainer 63and tube 62. As soon as pressure is remo-ved from the fluid Within thecylinder, the rod '24 will drop or may be readil returned to itslowermost position. The ttings at the opposite ends of the hose may nowreadily be disconnected from the sleeves 26 and 39, respectively,through the medium of the hand wheels 29 and 42, and the hose removed 1nthe reverse manner from which it was placed in position. It will thus beseen that due to the fact that the piston 54 greatly exceeds in sizethepiston 56, a fairlynominal pressure of compressed air will act toplace the fluid in the cylinder 57 under a very high pressure. Thepressure of the fluid within the system not only acts to expand thehose, but also acts to cause the coil 16 to be positioned within thebore of the hose.

W'hile in the drawings and the above description applicant has limitedhis disclosure to a certain set of details, it is to be understood thatvarious modifications are contemplated, and that the invent-ion shouldbe limited merely by the scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure b-y Letters Patent of theUnted States is:

l. In an apparatus of the class described, the combination of a tubularreceptacle, a

plunger rod loosely supportedwithin said receptacleand extendingtherebeyond, a hose, means for securing one end thereof to saidreceptacle about the projecting end of said plunger rod, and a st-uingbox secured to the -|opposite end of said hose and slidably re` 1ceiving said plunger rod.

2. An apparatus for snugly inserting a flexible tube withinahose,comprisin atubuc v lar receptacle, a plunger rod slida ly sup- Thevalve 47 is so constructed that in its 'ported Within the receptacle,said plunger rod being adapted to receive the flexible tube thereabout,means for securing one end of the hose-to said receptacle and about saidplunger, a stuliing box slidably receiving said plunger and adapted tobe secured to the opposite end of the hose, and means forl admittingfluid under pressure to said receptacle for expanding said hose and forforcing the plunger and the tube carried thereby into the ose.

3. An apparatus for snugly inserting a flexible tube within a hose tomaintain it expanded, comprising a tubular receptacle, a plunger rodslidably supported Within the receptacle, said-plunger rod being adaptedto receive the flexible tube thereabout, means for securing one end ofthe hose to said receptacle and about said plunger with the plungerextending through the opposite end of the hose, means for preventingfluid. leakage between the opposite end of the hose and the plungerextending therebeyond, and means for admitting fluid under pressure tosaid receptacle for expanding said hose and for forcing the plunger andthe tube carried thereby into the hose. v

4.,In an apparatus for snugly inserting a flexible non-collapsible tubewithin an expanded hose, comprising a plunger.` element adapted toextend within the bore of the hose and extend beyond the ends thereof, areceptacle for fluid-tight securement to one end of the hose and forreceiving thecorresponding end of the plunger, the plunger element beingadapted to receive the tube thereabout but within the receptacle, meansfor preventing fluid leakage between the opposite end of the hose andthe corresponding end of the plunger protruding therebeyond, and meansfor admitting fluid under pressure to the receptacle and associated hosefor expanding the hose and for exerting a pressure on the plungerelement effective to force it longitudinally through the hose to insertthe tube therein.

In witness whereof, I hereunto subscribe my name this 7 day of December,1923.

MORTON ROLAND SHERBINO.

